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SUMMARY:Tracking chalcophile elements from source to vent at Kilauea Volca
 no\, Hawaii - Penny Wieser\, University of Cambridge
DTSTART:20190508T111000Z
DTEND:20190508T120000Z
UID:TALK124453@talks.cam.ac.uk
CONTACT:Emily Mason
DESCRIPTION:Kilauea Volcano emits globally significant quantities of S and
  sulfur loving (Chalcophile) elements into the atmosphere. These emissions
  have serious implications for respiratory health and agricultural product
 ivity across the island. Yet\, the processes controlling the concentration
  of these elements in erupted melts are enigmatic. Using high precision ma
 jor and trace element measurements in melt inclusions and matrix glasses\,
   we demonstrate that chalcophile element systematics at Kilauea are contr
 olled by a number of processes\, including the presence of sulfide in the 
 mantle source\, sulfide-liquid immiscibility during fractionation\, sulfid
 e resorption upon eruption\, and the degassing of traditionally “refract
 ory” chalcophile elements (e.g. Se). Our conclusions differ substantiall
 y from those of previous work\, largely because in the literature\, chalco
 phile elements have only been investigated in lava lakes (where the behavi
 our of S is anomalous due to syn-eruptive degassing).
LOCATION: Harker 2\, Department of Earth Sciences\, Downing Street
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